Shutter is a feature-rich screenshot program. You can take a screenshot of a specific area, window, your whole screen, or even of a website – apply different effects to it, draw on it to highlight points, and then upload to an image hosting site, all within one window. Shutter is free, open-source, and licensed under GPL v3.
Capture

Shutter allows you to capture nearly anything on your screen without loosing control over your screenshots (tabbed interface). Here is an overview of what you can do with Shutter:

* Capture a specific area

This allows you to select an arbitrary region of your screen and capture only those parts you really need. Shutter offers two different tools to do so in order to meet any user’s taste.

* Capture a window

Simply use your mouse to select the window you want to capture. Shutter will highlight the currently select window in an attractive and useful way. It is even possible to simple select a window from a list and capture it right a way.

* Capture a menu or tooltip

Capturing menus or tooltips is very easy with Shutter. You select one of the options and a (user-defined) countdown starts. During this time you can open the desired menu or let a specific tooltip come up. Shutter will recognize and capture it.